package com.heima.behavior.filter;

import com.heima.model.user.pojos.ApUser;
import com.heima.utils.common.ThreadLocalUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
@Order(1)//
@WebFilter(filterName = "appTokenFiler",urlPatterns = "/*")
public class AppTokenFilter extends GenericFilter {

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //1.请求头拿出UserID
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;

        String userId = request.getHeader("userId");

        if (StringUtils.isNotEmpty(userId) && !userId.equals(0)){
            ApUser apUser = new ApUser();

            apUser.setId(Integer.valueOf(userId));
            //3.把对象存入ThreadLocal
            ThreadLocalUtils.set(apUser);
        }
        filterChain.doFilter(request, response);
    }
}
